binarystore: Update MAINTAINERS and OWNERS. Remove maxims and kunyi

Both maxims and kunyi are not active on the project anymore.

Add benjaminfair and wltu as the owner.

Change-Id: I3b704f9aeb95c94f051ef1910a27f0e39f326688
Signed-off-by: Willy Tu <wltu@google.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index e71458c..3376340 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -42,7 +42,6 @@
 START OF MAINTAINERS LIST
 -------------------------
 
-M:  Kun Yi <kunyi731@gmail.com> <kunyi!>
-M:  Maxim Sloyko <maxims@google.com> <maxims!>
-R:  Benjamin Fair <benjaminfair@google.com> <benjaminfair!>
+M:  Benjamin Fair <benjaminfair@google.com> <benjaminfair!>
+M:  Willy Tu <wltu@google.com> <wltu!>
 R:  Patrick Venture <venture@google.com> <venture!>